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cheatsheet-tldr/tldr/linux/ss
2025-12-01 00:25:28 +00:00

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---
syntax: markdown
tags: [tldr, linux]
source: https://github.com/tldr-pages/tldr.git
---
# ss
> Utility to investigate sockets.
> More information: <https://manned.org/ss>.
- Show all TCP/UDP/RAW/UNIX sockets:
`ss {{[-a|--all]}} {{-t|-u|-w|-x}}`
- Filter TCP sockets by states, only/exclude:
`ss {{state|exclude}} {{bucket|big|connected|synchronized|...}}`
- Show all TCP sockets connected to the local HTTPS port (443):
`ss {{[-t|--tcp]}} src :{{443}}`
- Show all TCP sockets listening on the local 8080 port:
`ss {{[-lt|--listening --tcp]}} src :{{8080}}`
- Show all TCP sockets along with processes connected to a remote SSH port:
`ss {{[-pt|--processes --tcp]}} dst :{{ssh}}`
- Show all UDP sockets connected on specific source and destination ports:
`ss {{[-u|--udp]}} 'sport == :{{source_port}} and dport == :{{destination_port}}'`
- Show all TCP IPv4 sockets locally connected on the subnet 192.168.0.0/16:
`ss {{[-4t|--ipv4 --tcp]}} src {{192.168/16}}`
- Kill IPv4 or IPv6 Socket Connection with a specific destination IP and port:
`ss {{[-K|--kill]}} dst {{ip_address}} dport = {{port}}`